./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f270b702de634d3ad2ee5a400388c6410a4cf10 ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:07:42,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:07:42,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:07:42,060 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:07:42,061 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:07:42,062 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:07:42,063 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:07:42,065 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:07:42,067 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:07:42,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:07:42,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:07:42,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:07:42,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:07:42,076 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:07:42,085 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:07:42,086 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:07:42,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:07:42,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:07:42,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:07:42,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:07:42,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:07:42,096 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:07:42,098 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:07:42,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:07:42,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:07:42,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:07:42,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:07:42,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:07:42,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:07:42,106 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:07:42,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:07:42,107 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:07:42,107 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:07:42,107 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:07:42,108 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:07:42,113 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:07:42,114 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-10-26 20:07:42,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:07:42,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:07:42,136 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:07:42,137 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:07:42,138 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:07:42,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:07:42,139 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:07:42,139 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:07:42,139 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:07:42,139 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:07:42,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:07:42,139 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:07:42,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:07:42,140 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:07:42,140 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:07:42,140 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:07:42,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:07:42,140 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-10-26 20:07:42,141 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-10-26 20:07:42,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:07:42,141 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:07:42,141 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 20:07:42,141 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:07:42,141 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:07:42,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:07:42,142 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-10-26 20:07:42,142 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:07:42,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:07:42,142 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2018-10-26 20:07:42,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:07:42,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:07:42,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:07:42,232 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:07:42,233 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:07:42,233 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-10-26 20:07:42,290 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/data/93e37b554/308aeca5ded64cbba8c266b9995650f6/FLAG19797901e [2018-10-26 20:07:42,734 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:07:42,745 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-10-26 20:07:42,762 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/data/93e37b554/308aeca5ded64cbba8c266b9995650f6/FLAG19797901e [2018-10-26 20:07:42,779 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/data/93e37b554/308aeca5ded64cbba8c266b9995650f6 [2018-10-26 20:07:42,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:07:42,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:07:42,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:07:42,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:07:42,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:07:42,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:07:42" (1/1) ... [2018-10-26 20:07:42,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad8fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:42, skipping insertion in model container [2018-10-26 20:07:42,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:07:42" (1/1) ... [2018-10-26 20:07:42,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:07:42,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:07:43,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:07:43,114 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:07:43,148 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:07:43,187 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:07:43,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43 WrapperNode [2018-10-26 20:07:43,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:07:43,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:07:43,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:07:43,189 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:07:43,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:07:43,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:07:43,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:07:43,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:07:43,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... [2018-10-26 20:07:43,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:07:43,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:07:43,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:07:43,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:07:43,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:07:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-10-26 20:07:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:07:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 20:07:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 20:07:43,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-10-26 20:07:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-26 20:07:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:07:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:07:43,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:07:44,802 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:07:44,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:07:44 BoogieIcfgContainer [2018-10-26 20:07:44,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:07:44,803 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-10-26 20:07:44,803 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-10-26 20:07:44,812 INFO L276 PluginConnector]: CodeCheck initialized [2018-10-26 20:07:44,812 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:07:44" (1/1) ... [2018-10-26 20:07:44,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:07:44,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 26 states and 40 transitions. [2018-10-26 20:07:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 40 transitions. [2018-10-26 20:07:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-26 20:07:44,853 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:07:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2018-10-26 20:07:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2018-10-26 20:07:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-26 20:07:44,989 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:07:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:45,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2018-10-26 20:07:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2018-10-26 20:07:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 20:07:45,214 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:07:45,465 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-10-26 20:07:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 32 states and 42 transitions. [2018-10-26 20:07:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2018-10-26 20:07:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 20:07:46,226 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:07:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2018-10-26 20:07:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2018-10-26 20:07:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 20:07:46,960 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:07:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:07:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-10-26 20:07:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 24 states and 32 transitions. [2018-10-26 20:07:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2018-10-26 20:07:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:07:47,828 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-10-26 20:07:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:07:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:07:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:07:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:07:47,917 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2018-10-26 20:07:47,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 26.10 08:07:47 ImpRootNode [2018-10-26 20:07:47,942 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-10-26 20:07:47,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:07:47,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:07:47,943 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:07:47,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:07:44" (3/4) ... [2018-10-26 20:07:47,946 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 20:07:47,987 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_df86c437-fcb0-4708-af45-da39b3d62e4e/bin-2019/ukojak/witness.graphml [2018-10-26 20:07:47,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:07:47,989 INFO L168 Benchmark]: Toolchain (without parser) took 5203.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 958.1 MB in the beginning and 846.0 MB in the end (delta: 112.1 MB). Peak memory consumption was 270.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,989 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:07:47,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.87 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 933.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,990 INFO L168 Benchmark]: Boogie Procedure Inliner took 119.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 933.9 MB in the beginning and 1.2 GB in the end (delta: -220.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,991 INFO L168 Benchmark]: Boogie Preprocessor took 30.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,991 INFO L168 Benchmark]: RCFGBuilder took 1457.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,992 INFO L168 Benchmark]: CodeCheck took 3139.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 849.2 MB in the end (delta: 229.7 MB). Peak memory consumption was 229.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,994 INFO L168 Benchmark]: Witness Printer took 45.05 ms. Allocated memory is still 1.2 GB. Free memory was 849.2 MB in the beginning and 846.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-10-26 20:07:47,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 78 locations, 3 error locations. UNSAFE Result, 3.0s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 264 SDtfs, 236 SDslu, 340 SDs, 0 SdLazy, 408 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 355 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 4024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] EXPR, FCALL malloc(sizeof(SLL)) [L994] SLL* list = malloc(sizeof(SLL)); [L995] FCALL list->next = ((void*)0) [L996] FCALL list->prev = ((void*)0) [L997] FCALL list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1029] COND FALSE !(0) [L1030] EXPR, FCALL end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1030] COND FALSE !(0) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR, FCALL end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR, FCALL end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 400.87 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 933.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 119.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 933.9 MB in the beginning and 1.2 GB in the end (delta: -220.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1457.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 72.6 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. * CodeCheck took 3139.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 849.2 MB in the end (delta: 229.7 MB). Peak memory consumption was 229.7 MB. Max. memory is 11.5 GB. * Witness Printer took 45.05 ms. Allocated memory is still 1.2 GB. Free memory was 849.2 MB in the beginning and 846.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...